ATL04CA174 · Grumman American AA1C
Grumman American AA1C · Accident: overrun during landing
From Cobb County International Airport-McCollum Field (KRYY) to Boone Inc Airport (NC14)
Event
- NTSB case
- ATL04CA174
- Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
- Accident
- InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
- Completed
- API-reported fatalities
- 0 · all aircraft and ground
- Ground fatalities
- Unknown
- OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
- General aviation
- WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
- Visual Meteorological Cond
Grumman American AA1C
- Aircraft type
- Grumman American AA1
- Category
- Airplane
- RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
- N137Y
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Cobb County International Airport-McCollum Field (KRYY), Marietta, GATo Boone Inc Airport (NC14), Boone, NC
- Aircraft age
- Not recorded
- Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
- Part 91: General Aviation
- Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
- Landing · landing roll
- First occurrenceThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
- Overrun
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Substantial
Cause areas
- Pilot in command › Distance/speed, misjudged
- Pilot in command › Wrong runway, selected
Approximate · Coordinates from the NTSB case API, which marks them as estimated or does not say; no uncertainty radius is established.
NTSB narrative
The pilot stated that he over flew the Boone Airport at a low altitude and observed that the windsock was stationary and that the runway surface was in good condition. The pilot stated that he flew a traffic pattern for runway 31. He stated that he slowed the airplane to 70 knots and fully extended the flaps. The pilot stated that he landed the airplane "close to the touchdown zone." He stated that he "applied brakes rapidly which loaded pressure to front strut torsion bar [which] responded by springing airplane back into air." The pilot stated that roll out was "successful, but damaged wingtip in underbrush at end of field" while completing a 90-degree turn at the end of the runway. No anomalies with the airplane were reported of the airplane. A witness in the area observed the airplane make three landing attempts prior the accident. He stated that on the accident landing, he observed the airplane "fishtailing" on the runway prior to departing the runway surface. He further stated that the airplane was landing downwind on runway 31. Post accident examination of the airplane revealed that the left wing spar and several outboard ribs on the left wing were damaged. The nearest weather reporting facility in Boone, North Carolina, 3 miles northwest of Boone Airport, reported the winds on September 4, 2004, at 1602, from 130 degrees at 5 knots. The Boone Airport has one runway, designated as 13/31, which is 2100 feet long and 40 feet wide. Runway 31 had a displaced threshold of 500 feet. At the edge of the runway surface of the departure end of runway 31, there is a run-up pad and a 50-foot grass area. Beyond the grass area are trees, 10-20 feet in height.
Probable cause
The pilot's selection of the wrong runway, and his misjudgment of the distance and speed during the approach to land, which resulted in the overrun of the runway surface and subsequent collision with trees. A factor was tailwind.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record ATL04CA174
- Event ID
- 20041013X01616
- Case number
- ATL04CA174
- Dataset
- historical-pre2008
- Source SHA-256
- 89e2df6d848e7ab3b42e7d7c7a03ff403303057a26ca04c95b3ea67201c3ce74
Source notes (4)
- Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
- Filled from the NTSB case API where the bulk record had no value: investigation status, coordinates. Values present in the bulk record are kept.
- The date is the local date, which is the same as the UTC date the NTSB stores.
- API snapshot SHA-256: 0bf2f84c6b9f72f4c6f935b5cdfbc87b6147291d699258d5c9e7f8864ec2b6c9; retrieved 2026-09-22T06:46:37.208Z.